Example now includes 2 custom characters

Author: mathertel

examples/LiquidCrystal_PCF8574_Test/LiquidCrystal_PCF8574_Test.ino

@@ -1,12 +1,18 @@
 #include <LiquidCrystal_PCF8574.h>
 #include <Wire.h>
 
-LiquidCrystal_PCF8574 lcd(0x27); // set the LCD address to 0x27 for a 16 chars and 2 line display
+LiquidCrystal_PCF8574 lcd(0x27);  // set the LCD address to 0x27 for a 16 chars and 2 line display
 
 int show = -1;
 
-void setup()
-{
+// 2 custom characters
+
+byte dotOff[] = { 0b00000, 0b01110, 0b10001, 0b10001,
+                  0b10001, 0b01110, 0b00000, 0b00000 };
+byte dotOn[] = { 0b00000, 0b01110, 0b11111, 0b11111,
+                 0b11111, 0b01110, 0b00000, 0b00000 };
+
+void setup() {
   int error;
 
   Serial.begin(115200);
@@ -16,7 +22,7 @@ void setup()
   while (!Serial)
     ;
 
-  Serial.println("Dose: check for LCD");
+  Serial.println("Probing for PCF8574 on address 0x27...");
 
   // See http://playground.arduino.cc/Main/I2cScanner how to test for a I2C device.
   Wire.begin();
@@ -28,17 +34,19 @@ void setup()
   if (error == 0) {
     Serial.println(": LCD found.");
     show = 0;
-    lcd.begin(16, 2); // initialize the lcd
+    lcd.begin(16, 2);  // initialize the lcd
+
+    lcd.createChar(1, dotOff);
+    lcd.createChar(2, dotOn);
 
   } else {
     Serial.println(": LCD not found.");
-  } // if
+  }  // if
 
-} // setup()
+}  // setup()
 
 
-void loop()
-{
+void loop() {
   if (show == 0) {
     lcd.setBacklight(255);
     lcd.home();
@@ -96,10 +104,16 @@ void loop()
     lcd.clear();
     lcd.print("write-");
 
-  } else if (show > 12) {
+  } else if (show == 13) {
+    lcd.clear();
+    lcd.print("custom 1:<\01>");
+    lcd.setCursor(0, 1);
+    lcd.print("custom 2:<\02>");
+
+  } else {
     lcd.print(show - 13);
-  } // if
+  }  // if
 
   delay(1400);
   show = (show + 1) % 16;
-} // loop()
+}  // loop()